KST to CLT
-13hKST
KSTSOURCECLT
CLTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and CLT on the World Map
The map below highlights the KST (Korea Standard Time) and CLT (Chile Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
CLT – Chile Standard Time
UTC-04:00Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.
- •Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer.
- •Santiago is the largest city in Chile with over 6 million in the metro area.
- •Chile spans over 4,300 km from north to south but uses one timezone.
Comparing Time Zones: KST and CLT
KST runs on Korea Standard Time (KST) at UTC+09:00. CLT runs on Chile Standard Time (CLT) at UTC-04:00. That puts KST 13 hours behind CLT — a difference of -13h at the current offsets.
In practice, when it is 9:00 AM in KST it is 8:00 PM in CLT on the previous day. Midnight in KST is 11:00 AM in CLT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
KST to CLT time conversion table
| KST (KST) | CLT (CLT) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | previous day |
| 6:00 AM | 5:00 PM | previous day |
| 7:00 AM | 6:00 PM | previous day |
| 8:00 AM | 7:00 PM | previous day |
| 9:00 AM | 8:00 PM | previous day |
| 12:00 PM | 11:00 PM | previous day |
| 3:00 PM | 2:00 AM | same day |
| 5:00 PM | 4:00 AM | same day |
| 6:00 PM | 5:00 AM | same day |
| 9:00 PM | 8:00 AM | same day |
Why people convert KST to CLT time
- Scheduling a call from KST to CLT: a 10:00 AM start in KST lands at 9:00 PM in CLT the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -13h gap: KST and CLT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in CLT is 8:00 PM in KST.
- Watching a live event or market open: KST viewers need 8:00 PM in CLT to catch a 9:00 AM start there, and 1:00 PM if the event is anchored to KST.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -13h gap is not.
- With a -13h gap there is no shared 9-to-5 window, so alternate the early start: one week KST takes the early slot, the next week CLT does.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
About CLT (Chile Standard Time)
Chile Standard Time (CLT) is the standard time in Chile. During summer months (October to March), Chile switches to Chile Summer Time (CLST, UTC-03:00). Chile is the longest north-south country in the world.
Best time to call between KST and CLT
With a -13h offset there is no overlap inside a normal 9 AM – 5 PM day. CLT opens at 9:00 AM CLT, which is 8:00 PM in KST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
KST and CLT have no shared working hours because of the -13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
KST is 13 hours behind CLT (KST UTC+09:00 → CLT UTC-04:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
KST
Does not observe DST
CLT
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Apr 4, 2027
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between KST and CLT?
KST (KST, UTC+09:00) is 13 hours behind CLT (CLT, UTC-04:00). The gap is currently -13h.
How do I convert KST time to CLT time?
Add -13h to KST local time. For example, 9:00 AM in KST is 8:00 PM in CLT (previous day).
What time is it in CLT right now?
CLT uses CLT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -13h offset from KST.
What is the best time to call CLT from KST?
There is no shared working-hours window because of the -13h gap. The closest option is 1:00 PM in KST, which is 12:00 AM in CLT.
Which is behind, KST or CLT?
KST is 13 hours behind CLT. When it is 12:00 PM in KST it is 11:00 PM in CLT.
Does daylight saving time affect the KST–CLT difference?
Neither zone observes daylight saving time, so the -13h offset between KST and CLT is fixed all year.
Which other cities share KST's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, KST's zone?
KST is used in South Korea, North Korea.
Is there a day difference between KST and CLT?
Sometimes. The -13h gap is large enough that 8:00 PM or later in KST already falls on the in CLT.
What is the time difference between KST and CLT?
CLT is -13h from KST.
What timezone is KST in?
KST operates on its local timezone.
What timezone is CLT in?
CLT operates on its local timezone.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the CLT timezone?
Major cities in the CLT timezone include Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.
What is the UTC offset for CLT?
Chile Standard Time (CLT) is at UTC-04:00. During daylight saving time, it shifts to CLST.
What should I know about the CLT timezone?
Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer. Santiago is the largest city in Chile with over 6 million in the metro area.
When is it midnight in KST, what time is it in CLT?
When it is 12:00 AM (midnight) in KST (KST), it is -13h later in CLT (CLT).
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See every conversion from KST →·See every conversion from CLT →